Buick Rendezvous / Encore Timing Belt Or Chain | Auto Does A Buick Rendezvous / Encore Have A Timing Belt (Cambelt) Or A Chain? Here is a list of timing belts and timing chains for a Buick Rendezvous / Encore. Reference the model year with the corresponding engine to see if your car has a belt or a chain. when do you change the timing belt? - 2004 Buick Rendezvous May 18, 2010good news does not have a timing belt. it has a chain that is replaced at engine overhaul. you have a serpentine belt. you need a special tool to release the tensioner. take it to a shop. it is very reasonable to do it. Roy . Sign in to reply. 2005 buick rendezvous ultra 3.